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1 // Based on http://vis.stanford.edu/protovis/ex/clock.html |
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2 // Based on http://blog.pixelbreaker.com/polarclock |
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3 |
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4 var w = 960, |
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5 h = 700, |
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6 r = Math.min(w, h) / 1.8, |
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7 s = .09, |
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8 fsec = d3.time.format("%S s"), |
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9 fmin = d3.time.format("%M m"), |
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10 fhou = d3.time.format("%H h"), |
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11 fwee = d3.time.format("%a"), |
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12 fdat = d3.time.format("%d d"), |
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13 fmon = d3.time.format("%b"); |
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14 |
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15 var fill = d3.scale.linear() |
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16 .range(["hsl(-180, 50%, 50%)", "hsl(180, 50%, 50%)"]) |
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17 .interpolate(d3.interpolateHsl); |
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18 |
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19 var arc = d3.svg.arc() |
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20 .startAngle(0) |
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21 .endAngle(function(d) { return d.value * 2 * Math.PI; }) |
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22 .innerRadius(function(d) { return d.index * r; }) |
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23 .outerRadius(function(d) { return (d.index + s) * r; }); |
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24 |
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25 var vis = d3.select("#clock").append("svg:svg") |
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26 .attr("width", w) |
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27 .attr("height", h) |
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28 .append("svg:g") |
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29 .attr("transform", "translate(" + w / 2 + "," + h / 2 + ")"); |
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30 |
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31 var g = vis.selectAll("g") |
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32 .data(fields) |
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33 .enter().append("svg:g"); |
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34 |
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35 g.append("svg:path") |
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36 .style("fill", function(d) { return fill(d.value); }) |
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37 .attr("d", arc); |
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38 |
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39 g.append("svg:text") |
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40 .attr("text-anchor", "middle") |
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41 .attr("dy", "1em") |
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42 .text(function(d) { return d.text; }); |
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43 |
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44 |
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45 // Update arcs. |
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46 d3.timer(function() { |
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47 var g = vis.selectAll("g") |
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48 .data(fields); |
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49 |
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50 g.select("path") |
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51 .style("fill", function(d) { return fill(d.value); }) |
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52 .attr("d", arc); |
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53 |
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54 g.select("text") |
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55 .attr("dy", function(d) { return d.value < .5 ? "-.5em" : "1em"; }) |
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56 .attr("transform", function(d) { |
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57 return "rotate(" + 360 * d.value + ")" |
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58 + "translate(0," + -(d.index + s / 2) * r + ")" |
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59 + "rotate(" + (d.value < .5 ? -90 : 90) + ")" |
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60 }) |
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61 .text(function(d) { return d.text; }); |
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62 }); |
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63 |
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64 // Generate the fields for the current date/time. |
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65 function fields() { |
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66 var d = new Date; |
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67 |
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68 function days() { |
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69 return 32 - new Date(d.getYear(), d.getMonth(), 32).getDate(); |
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70 } |
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71 |
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72 var second = (d.getSeconds() + d.getMilliseconds() / 1000) / 60, |
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73 minute = (d.getMinutes() + second) / 60, |
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74 hour = (d.getHours() + minute) / 24, |
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75 weekday = (d.getDay() + hour) / 7, |
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76 date = (d.getDate() - 1 + hour) / days(), |
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77 month = (d.getMonth() + date) / 12; |
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78 |
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79 return [ |
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80 {value: second, index: .7, text: fsec(d)}, |
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81 {value: minute, index: .6, text: fmin(d)}, |
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82 {value: hour, index: .5, text: fhou(d)}, |
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83 {value: weekday, index: .3, text: fwee(d)}, |
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84 {value: date, index: .2, text: fdat(d)}, |
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85 {value: month, index: .1, text: fmon(d)}, |
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86 ]; |
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87 } |